US5493919A - Force measuring system - Google Patents

Force measuring system Download PDF

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Publication number
US5493919A
US5493919A US08/166,454 US16645493A US5493919A US 5493919 A US5493919 A US 5493919A US 16645493 A US16645493 A US 16645493A US 5493919 A US5493919 A US 5493919A
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US
United States
Prior art keywords
measuring
force
directions
forces
attack
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Expired - Lifetime
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US08/166,454
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English (en)
Inventor
Dieter Frank
Axel Stender
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Wabco Standard GmbH
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Wabco Standard GmbH
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Publication date
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Assigned to WABCO STANDARD GMBH reassignment WABCO STANDARD GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DIETER, FRANK, STENDER, AXEL
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
    • G01L5/136—Force sensors associated with a vehicle traction coupling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes

Definitions

  • the invention relates to a force measuring system having two force measuring sensors for measuring two forces acting on a body.
  • a force measuring system of this type is mentioned on page 9 of EP 0 303 827 B1. Its force sensors measure a force acting in the vertical direction and a force acting in the horizontal direction on a body. The body upon which these forces act is the articulated coupling of a vehicle train towing vehicle.
  • a force measuring system for measuring first and second forces acting on a body along first and second directions of attack, comprising first and second force sensors disposed at first and second measuring directions. At least the first measuring direction differs from the first and second directions of attack. In a preferred embodiment, the second measuring direction also differs from the first and second directions of attack. From the forces measured by the force sensors along the measuring directions, the two forces acting on the body can be calculated.
  • the invention can be used to special advantage in cases where the precision of measurement of the force sensors is low in the lower range of operation, as is usually the case, and where the magnitude of one of the forces fluctuates widely, while the lower limit may very well be zero.
  • the known force measuring system wherein the two force sensors coincide with or are parallel to the direction of action of the forces, delivers imprecise measuring results if one of the forces is small.
  • the other force which remains constant or fluctuates less, provides a basic load for both force sensors, so that neither force sensor functions in its range of lesser measuring precision.
  • the invention can also be used when one of the forces is missing.
  • the invention measures the remaining force by measuring its components in the measuring direction of the force sensors.
  • Force sensors which are able to measure only in one direction are often used.
  • two force sensors facing each other have previously been used if the force or forces alternate between traction and compression with respect to one force sensor.
  • the invention makes it possible to leave out the force sensors associated with traction or those associated with compression because of the difference provided between measuring direction and direction or directions of action of the force or forces.
  • the invention thereby offers a simple and low-cost solution.
  • the force sensors used often function on the principle of measuring expansion or deformation.
  • the invention makes it possible to evaluate the measured results of the force sensors in the form of expansion or deformation values such as they occur in the directions of measurement.
  • two forces F 1 and F 2 act on a body 1 along directions of attack which are at angles ⁇ and ⁇ with respect to a reference line V--V.
  • Each of the forces F 1 and F 2 may be the resultant of several forces.
  • a force measuring system has two schematically shown force sensors (2 and 3).
  • Each force sensor (2 or 3) may be an individual sensor, but may also consist of several individual sensors.
  • the force sensors (2 and 3) are placed so that their directions of measuring which are defined by the angles ⁇ and ⁇ to the reference line V--V deviate from the directions of attack ⁇ and ⁇ of the forces F 1 and F 2 .
  • the force measured along measuring direction ⁇ is denoted as F Meas2 and the force measured along measuring direction ⁇ is denoted as F Meas1 .
  • the measuring directions ⁇ and ⁇ are each set at 45°.
  • the magnitudes of the forces F 1 and F 2 can be calculated from the measured forces F Meas1 and F Meas2 , for instance by means of an electronic computer which can be appropriately programmed.
  • the force sensors (2 and 3) operate on the principle of expansion or deformation measurement
  • the measured forces F Meas1 and F Meas2 can be converted into expansion or deformation values in the measuring directions ( ⁇ and ⁇ ) based on the corresponding characteristics of the force sensors (2 and 3).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
US08/166,454 1992-12-19 1993-12-13 Force measuring system Expired - Lifetime US5493919A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4243246A DE4243246A1 (de) 1992-12-19 1992-12-19 Kraftmeßeinrichtung
DE4243246.4 1992-12-19

Publications (1)

Publication Number Publication Date
US5493919A true US5493919A (en) 1996-02-27

Family

ID=6475951

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/166,454 Expired - Lifetime US5493919A (en) 1992-12-19 1993-12-13 Force measuring system

Country Status (5)

Country Link
US (1) US5493919A (en:Method)
EP (1) EP0603494A2 (en:Method)
JP (1) JPH07306102A (en:Method)
BR (1) BR9304744A (en:Method)
DE (1) DE4243246A1 (en:Method)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798748A (en) * 1995-06-07 1998-08-25 Spacetec Imc Corporation Force and torque converter with improved digital optical sensing circuitry
US6658358B2 (en) * 2002-05-02 2003-12-02 Hewlett-Packard Development Company, L.P. Method and system for computing forces on data objects for physics-based visualization
US20080168657A1 (en) * 2007-01-12 2008-07-17 Cinzia Simonis Cloke Razor cartridge measurement apparatus
CN107063546A (zh) * 2016-12-19 2017-08-18 安徽天裕汽车零部件制造有限公司 一种消除摆臂球头受力测量误差的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2101685C1 (ru) * 1996-02-23 1998-01-10 Товарищество с ограниченной ответственностью "ФизТех" Способ измерения механических силовых воздействий между материальными объектами и устройства для его осуществления
FR2834065B1 (fr) * 2001-12-20 2004-03-05 Centre Nat Rech Scient Dispositif capteur, dispositif de mesure et dispositif d'analyse comportant un tel dispositif capteur
DE102014114277A1 (de) * 2014-10-01 2016-04-07 Yaskawa Europe Gmbh Effektor und Verfahren zum Bewegen bewegbarer Anbauteile einer Fahrzeugkarosserie

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE722579C (de) * 1938-11-12 1942-07-13 Aerodynamische Versuchsanstalt Anordnung zur Bestimmung der an Koerpern auftretenden Kraefte und Momente nach mehreren Komponenten
DE2521858A1 (de) * 1975-05-16 1976-11-25 Meerestech Seebau Ing Ims Verfahren zur messung der gesamtbelastung eines auf pfaehlen stehenden bauwerks, insbesondere einer offshore- struktur
DE3440670A1 (de) * 1984-11-07 1986-05-07 Prometec GmbH, 5100 Aachen Einrichtung zum messen der auf maschinenbauteile wirkenden kraefte
US4700566A (en) * 1985-08-09 1987-10-20 Pfister Gmbh Device for dividing vector forces into their components
EP0303827A1 (en) * 1987-08-17 1989-02-22 Eaton Corporation Tractor-Trailer brake control system
DE3820680A1 (de) * 1988-06-18 1989-12-21 Schenck Ag Carl Waagenanordnung mit einer pyramidenwaage zur ermittlung von kraeften und momenten, insbesondere in windkanaelen
US5222400A (en) * 1985-12-18 1993-06-29 Spaceball Technologies Incorporated Force and torque converter
US5335557A (en) * 1991-11-26 1994-08-09 Taizo Yasutake Touch sensitive input control device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE722579C (de) * 1938-11-12 1942-07-13 Aerodynamische Versuchsanstalt Anordnung zur Bestimmung der an Koerpern auftretenden Kraefte und Momente nach mehreren Komponenten
DE2521858A1 (de) * 1975-05-16 1976-11-25 Meerestech Seebau Ing Ims Verfahren zur messung der gesamtbelastung eines auf pfaehlen stehenden bauwerks, insbesondere einer offshore- struktur
DE3440670A1 (de) * 1984-11-07 1986-05-07 Prometec GmbH, 5100 Aachen Einrichtung zum messen der auf maschinenbauteile wirkenden kraefte
US4700566A (en) * 1985-08-09 1987-10-20 Pfister Gmbh Device for dividing vector forces into their components
US5222400A (en) * 1985-12-18 1993-06-29 Spaceball Technologies Incorporated Force and torque converter
EP0303827A1 (en) * 1987-08-17 1989-02-22 Eaton Corporation Tractor-Trailer brake control system
DE3820680A1 (de) * 1988-06-18 1989-12-21 Schenck Ag Carl Waagenanordnung mit einer pyramidenwaage zur ermittlung von kraeften und momenten, insbesondere in windkanaelen
US5335557A (en) * 1991-11-26 1994-08-09 Taizo Yasutake Touch sensitive input control device

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
8253a Sensors and Actuators A Physical, A32(1992) Apr., Nos. 1/3, Lausanne, Switzerland pp. 531 538. *
8253a Sensors and Actuators-A Physical, A32(1992) Apr., Nos. 1/3, Lausanne, Switzerland pp. 531-538.
A. Romiti and M. Sorle "force and moment measurement on a robotic assembly hand" p. 532, left column, line 10-p. 534, right column, line 14; FIGS. 2-5.
A. Romiti and M. Sorle force and moment measurement on a robotic assembly hand p. 532, left column, line 10 p. 534, right column, line 14; FIGS. 2 5. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798748A (en) * 1995-06-07 1998-08-25 Spacetec Imc Corporation Force and torque converter with improved digital optical sensing circuitry
US6658358B2 (en) * 2002-05-02 2003-12-02 Hewlett-Packard Development Company, L.P. Method and system for computing forces on data objects for physics-based visualization
US20080168657A1 (en) * 2007-01-12 2008-07-17 Cinzia Simonis Cloke Razor cartridge measurement apparatus
WO2008084429A1 (en) * 2007-01-12 2008-07-17 The Gillette Company Razor cartridge measurement apparatus
CN101578164B (zh) * 2007-01-12 2012-12-12 吉列公司 剃刀刀片架测量设备
CN107063546A (zh) * 2016-12-19 2017-08-18 安徽天裕汽车零部件制造有限公司 一种消除摆臂球头受力测量误差的方法

Also Published As

Publication number Publication date
EP0603494A2 (de) 1994-06-29
JPH07306102A (ja) 1995-11-21
BR9304744A (pt) 1994-06-21
DE4243246A1 (de) 1994-06-23
EP0603494A3 (en:Method) 1994-08-31

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